After reading a post today by Seth Godin it reminded us of an old email forward. See if you can spot the spelling mistake in Seth Godin's Post. Next, try to read the paragraph below and count every letter “F”. We think you’ll be surprised.

FINISHED FILES ARE THE RE SULT OF YEARS OF SCIENTI FIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS...

How many did you count? The answer should be SIX. Don’t believe us, then check again. We are told that this happens because our brain does not process the word “OF”.

The original author of this puzzle is unknown to us… but we know they were probably really smart.